An amplitude analysis of flavor-untagged B0s → J/ψ p anti-p decays is performed using a sample of 797 ± 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb^−1. Evidence for a new structure in the J/ψ p and J/ψ anti-p systems with a mass of 4337{-4}{+7}{-2}{+2} MeV and a width of 29{-12}{+26}{-14}{+14} MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7 σ, depending on the assigned J^P hypothesis.

Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2022). Evidence for a New Structure in the J/ψ p and J/ψ anti-p Systems in B0s → J/ψ p anti-p Decays. PHYSICAL REVIEW LETTERS, 128(6), 1-11 [10.1103/PhysRevLett.128.062001].

Evidence for a New Structure in the J/ψ p and J/ψ anti-p Systems in B0s → J/ψ p anti-p Decays

Capriotti, L.;Carbone, A.;Ferrari, F.;Galli, D.;Maccolini, S.;Manuzzi, D.;Patrignani, C.;Villa, A.;Zucchelli, S.;
2022

Abstract

An amplitude analysis of flavor-untagged B0s → J/ψ p anti-p decays is performed using a sample of 797 ± 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb^−1. Evidence for a new structure in the J/ψ p and J/ψ anti-p systems with a mass of 4337{-4}{+7}{-2}{+2} MeV and a width of 29{-12}{+26}{-14}{+14} MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7 σ, depending on the assigned J^P hypothesis.
2022
Aaij, R., Abdelmotteleb, A., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., et al. (2022). Evidence for a New Structure in the J/ψ p and J/ψ anti-p Systems in B0s → J/ψ p anti-p Decays. PHYSICAL REVIEW LETTERS, 128(6), 1-11 [10.1103/PhysRevLett.128.062001].
Aaij, R.; Abdelmotteleb, A.S.W.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C.A.; Aiola, S.; Ajaltouni, Z.; Ak...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/899030
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